Degradação de madeira de pinus sp. por contato com metabólitos extracelulares de fungos filamentosos

Abstract

The biodegradation of the wood, classified as lignocellulosic biomass, was seen as a problem, however, with the advance of the perception about the enzyme that involves in the process of degradation of this substrate, a new scenario was created in relation to the microorganisms that participate. Therefore, the present study seeks evaluate the enzyme production capacity of the lignocellulosic complex of filamentous fungi and the effect of these metabolites on the lignocellulosic biomass submitted to submerged fermentation (SmF) inoculated with the five best-selected strains. For this purpose, the tensile strength of Pinus sp. It was evaluated by tensile strength, shear parallel to fiber and impact resistance tests. Among the analyzed strains, A1 presented 48,68% modulus of elasticity reduction in the shear test parallel to fibers and 36,35% of the percentage of energy reduction in impact resistance and J13 presented a reduction of 46,92% and 57,42% for the same tests. Therefore, the selection process of the best strains was satisfactory, as well as the degradation action of the specimens submitted to the FSm process. Thus, these can be used in processes that depends on the degradative action of lignocellulosic biomass.